Adjustable fire box



Nov. 6, w23. 11,473,237

' A. KUBICKI ADJUSTABLE FIRE BOX Filed Dec. 4. 1922 2- Sheets-Sheet 1 Nov. 6, E923. 11,473,237

A. KUBlcKl ADJUSTABLE FIRE BOX Filed Deo. 4, 1922 2 sheets-shea 2 Patented Nov. 6, 1923.

NETE@ ANDREW KUBICKI, 0F YVEBSLEB', MASSACHUSETTS.

ADJUSTABLE FIRE BOX.

Application led December fl, 1922. Serial No. 604,640.

To all whom t may concern:

V13e it known that l, ANDREW KUBICKI, a citizen of the United States, residing at Webster, in the county of Worcester and State of Massachusetts, have invented a new and useful Adjustable Fire Box, of which the following is a specification.

This invention relates to a fire box capable of general use, but particularly useful in connection with a coal or wood range.

The principal objects of the invention are to provide means whereby the effective size of the re box can be varied to permit of its use for a relatively small fire when desired in order to 'use a fuel more concentrated than that ordinarily used or to economize in the amount of fuel consumed and not necessitate the employment of the whole fire box and the consequent full charge of fuel; and also to provide for -this adjustment in a simple manner which will not interfere with the use of the range in the ordinary way and with a full charge of fuel. The invention also involves the division of the fire box in two lways. which can be used independently of each other or in co-operation if desired. l have shown them used in the same structure. advantages of the invention will appear hereinafter.

Reference is 4to be had tothe accompany-v ing drawings in which Fig. 1 is a longitudinal sectional view of a part of a coal range showing a preferred embodiment of this invention applied thereto; Y

Fig. 2 is a longitudinal sectional view of the fire box on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary plan of the adjustable grate; i

Fig. i is a fragmentary side view of one of the supporting legs enlarged showing the grate applied thereto; l

Fig. 5 is a fragmentary vertical sectional view of the same on the line 5'5 in Fig. 4;

Fig. 6 is a fragmentary horizontal sectional view on the line 6-6 in Fig. 4;

Fig. 7 is an enlarged fragmentary end view looking in the direction of the arrow 7 in Fig. 2, showing the means for reducing the length of the fire-box; and

Fig. 8 is an enlarged fragmentary view similar to part of Fig. 2, but showing the end partition drawn up out of the way of o the grate.

Additional objects and an ordinary coal range having a. fire-box lined with lire brick 10 at the front and rear ends, and having the usual oscillating or rotating dumping grate 11.

For the purpose of reducing the effective depth of the fire-box l provide a series of legs 13 preferably four in number each having a foot 14 adapted to rest on the bottom wall of there-box that projects beyond the fire-brick. These legs are located near the four corners of the fire-box Iand each one is provided with a plurality of key-hole shaped-slots 15. The several slots in the several legs are located at the same elevation, and they are arranged to support undercut inset projections 16 on a removable auxiliary grate 17. The legs therefore do not project beyond the grate.

The grate is shown as having .a series of parallel long perforations 1K8 and a series of circular perforations 19, either of which can be used alone throughout the area of the grate. 1t is designed to be located in elevatedl position supported by these legs, so that a small amount of coal or wood can be used upon it directly under the lid openings for the purpose of getting the necessary amount of heat with considerably less fuel than would be used with the entire fire-box in o-peration, and to concentrate the fire directly, under the lid opening so that the heat will be more effectivelyv applied. This grate can extend throughout the whole length of the fire-box if desired, but I have shown it used in cooperatio-n with another feature, so that it appears as extending throughout only a part of its length.

The additional feature which l have mentioned consists of a device for cutting off the effective length of the fire-box. This is a metal plate 2O arranged vertically in the fire-box near one end. It is provided with a wire supporting bale 21 pivoted in lugs 22 on its back extending across it, and having its arms rounded at the top and projecting up so as to rest on the rounded upper edge of the top of the fire brick. This is intended to support the removable plate 2O in vertical position and cut off the length of the fire-box so as to limit the amount of fuel used whether the grate 17 is used or not.V

ln order to prevent the draft being allowed to pass up beyond the plate 20 I pivot to its bottom a Sheet metal or other plate 24 adapted to be located horizontally beyond the plate 2O and cut 0E the draft. This i plate 24el fills the entire space beyondVK the the' plates 2O and 24 outof the way beforer Vthat can be done. For this purpose Ya link plate 2O in which no i'ire is to Vbe built and grate has,v to swing in the usual manner s oV` that it is necessary to provide Vfor moving 25 is fpivotedfto the plate'2tlat`about its centerandis connected with afiat operating i hook 26 pivoted to the plate-20. This op- :erating hook 26 has an elbow 27 for connection withV the link and a loop 28 beyond it for the operator to take hold of with a finger formanipulating the parts. It also has a rounded end 29 adapted to engage the platek 20. Y.

When it is desired to operate the grate the user grabs the hook in the most convenient position as shown in Fig. 2,V and swings it up to' the position shown in Fig. S to get the plate 2O up out of the way of the i turning- -grate, so that the ashes can be dumped or the like. Then he turns it back again, the whole thing being supported on the bale 21V all the time, and it is ready for Voperation again.

Although I have illustrated and *described only a 'single form of the invention I ain aware of the fact that modifications can be made thereinby any person skilledin the art without departing from the scope of the invention as expressed in the claims. Therefore I donot wish to be limited to all the details of construction hereinv shown and described, but what I do claim'l is yl. In a device of the character described,

the combinationwitli a plate adapted to be placed 'inv a fire bo-x to cut off' the effective length thereof, ofa plate connected lto the first named plate and adapted to be located in position to prevent draft behind the first named' plate, la handleconnected with one plate, and' means connected with the handle and with the other plate for swinging the horizontal plate upwardlyl and simultaneously swinging the vertical plate to inclined position to permit Voperation of a dumping Agrate below. Y i

2. In a device for thepurpose described, theV combination of a removable grate havling near its edges a series of undercut inset lugs, and the same number of legs, eachhaving a keyhole slot for receiving oiie'of said lugs.

3. Inr a device for the purpose described,

f the combination with a fire box, of a Vre-` movable gratehaving near its four corners a series of uiidercut' inset lugs andthe same number of legs, eachl having a keyhole slot for receiving one of said lugs, said legs having feetv extending inwardly at their lower' i vertical positions in the fire box, said-grate 1 extending' only part way from one end of the fire box to the other, a plate located at the end of the grate in. vertical positiony to reduce the yeective length of the fire box, anda bale connected with said plate extending up from it at front and rear tohold the plate in position.`

5. The combination with a fire box and a dumping grate extending thelength thereof,of` an auxiliary grate above the dumping. grate, adjustable and detachable and extending only part wayfrom one end of thefire box to the other, a horizontal end plate beyond the end of theauxiliary grate, and means for moving the end platefbeyond the range ofthedumpingzgrate inlo-rder that it may be turned.

6. The combination with a fire box,of a vertical plate located therein forreducing its effectivelength, a bale pivoted to the Vrear of said plate and 'having arms extending up at the front andrear ofthe fire box to en-VVV Ythe combination with a plate adapted to-be placed in a fire box to`cut off-'theieifective lengththereof, of a balepivoted to the rear thereof, 4and having means for supporting the plate from the front and rear sides of;VV

the fire box, an imperfor'ate platepivotally connectedfto the 'bottom of the first named.. lplate and adapted' to be located in horizontal position to prevent draft behind the first named plate, a linkconnected with the horizontallplate,'and a handle pivoted to the vervtical plate and to the link `vfor 1swinging the horizontal plateupwardly and thevertical permit operaplate' to inclined position to tionof a dumping grate below.

In testimony whereof II have hereunto affixed mysignature.u

ANDREW xiiincisi.` e 

